What is the primary function of a moisturizer?

The primary function of a moisturizer is to hydrate and maintain the skin's moisture barrier. Moisturizers play a crucial role in skincare by helping to replenish water levels in the skin, which is essential for maintaining elasticity, softness, and overall skin health. They work by creating a barrier that locks in moisture and prevents transepidermal water loss, which can lead to dryness and irritation.

This hydration is vital not only for aesthetic purposes but also for the skin’s function as a protective barrier against environmental aggressors. When skin is well-hydrated, it can better defend against external factors like pollution, weather changes, and abrasive substances that could compromise its integrity.

The other functions, such as exfoliating the skin, providing UV protection, or reducing pigmentation, belong to different types of products. Exfoliation is typically associated with scrubs or acids designed to remove dead skin cells. UV protection is the purpose of sunscreen, which safeguards the skin from harmful rays. Reducing pigmentation is often addressed with targeted treatments rather than moisturizers, making hydration and moisture retention the central purpose of a moisturizer.